The heart of Trijicon AccuPin's innovative design lies in its triangular aiming tip and clear aiming pin. With a precision aiming point and zero obstructions, this one-of-a-kind configuration has an aiming point that actually points to your target instead of obscuring it.For the ultimate in visibility and aiming precision — even in the toughest conditions—the AccuPin incorporates the acclaimed Trijicon dual-illumination/ battery-free system. With a combination of fiber optics and tritium pioneered and perfected in their world-class riflescopes, the Trijicon AccuPin is the brightest pin sight on the market. The Trijicon AccuPin™ and its combination of fiber optic and tritium illumination are Pope & Young Legal.